Write the area of circle whpse radius is r and length pf arc is l
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Answer:If the radius of a circle is r and length of the arc is l, then
Length of the arc (l) = (θ /360) ×2 πr……(1)
Length of the arc (l) = (θ /180) × πr
Area of sector = (θ /360) ×πr²
Area of sector = ½ ×r (θ / 180) ×πr
Area of sector =( ½) lr [ from eq 1]
Hence , the Area of sector = ( ½) lr
sq unit
Step-by-step explanation:
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